How can I recycle HDPE/PP mixed waste stream?

A big manufacturer of crates based out of Nagpur, Maharashtra was making crates using HDPE and PP. However, he was primarily using only recycled content instead of prime polymers for his finished product in order to save on cost.

Recycled content usually comes in the form of polymer grindings from different injection molded articles. As you might already be knowing, the biggest challenge with the usage of recycled content is getting clean segregated materials. However, the customer noticed that a lot of times he was receiving mixed streams of HDPE and PP. Use of HDPE/PP mixed stream was creating an incompatible polymer system leading to poor mechanical properties.

To address this problem, I developed a ready to use additive masterbatch. Reborn Mixed Waste Recycler was supplied in the granule form and was to be added in low percentages. We tried this product on a HDPE/PP (approximately 70:30) mixed stream. The MB was physically mixed at a 5% loading level in the mixer and then processed in an injection molding machine. The results were quite good, with the crates now maintaining fairly decent mechanical properties. The crate was tested by the manufacturer, by putting a heavy load and seeing if it can withstand it without cracking. We were pleased to notice that the crate with the Reborn Mixed Waste Recycler did not crack, while the one without it was cracking. The same process was repeated on a few different lots to ensure that the results were consistent.

For anyone wanting to process HDPE/PP mixed waste streams together and get decent mechanical performance, kindly reach out at +91 9167684185 for a free sample today!

---